/**
* Mark a team (registration) as not at start to be able to get an overview
* and begin the race start sequence if all other competitors are at start.
*
* @Route("/team/{registration}/NotAtStart", name="race_start_nas")
* @Method("GET")
* @Security("has_role('ROLE_REGISTRATION')")
*/
public function notAtStartAction(Request $request, Registration $registration)
{
$em = $this->getDoctrine()->getManager();
$registration->setCancelled();
$em->persist($registration);
$em->flush();
return $this->redirect($request->headers->get('referer'));
}